Thank you for all your wonderful help! Your post worked great. And I now have a keystore for UE5.
For future generations, here a complete review and some pointers for the solution:
How I ended up fixing not being able to use Android Studio to create a keystore: I did not use Android Studio. Instead I used the command line to the Keytool program. All the same inputs are given in the command line that are input in Android Studio. Two resources I found that were the best is a YouTube video: “Unreal Engine 4 How To Packing Android Game Make .aab File for Unreal Engine Android Export UE4” which works for UE5 also. And an Unreal Engine Forum Post: “Cmd.exe failed with args: Rungradle.bat. Packaging for android” which also covers using the Keytool program. (The solution mentioned here.) Good luck to everyone!